

public class Circulo {
	
	public Circulo(){
		
	}
	
	public Circulo(String[] args){
		
	}
	
	
	
	public String areaCirculo(float r){
		System.err.println(r+" "+Math.PI*r*r);
		return String.valueOf(Math.PI*r*r);
	}
	
	public String perimetroCirculo(float r){
		System.err.println(r+" "+Math.PI*r*2);
		return String.valueOf(Math.PI*r*2);
	}



}
